Henry price ball and amandus metzger



(NoModel.)

H. P. BALL 8u A. METZGER.

LAMP SOCKET.

Patented Man-14, 1893;

UNITED STATES PATENT OFFICE.

HENRY PRICE BALL AND AMANDUS METZGER, OF SCHENECTADY, ASSIGNORS TO THE vGENERAL ELECTRIC COMPANY, OE NEW YORK, N. Y.

LAM P-SOCKET.

SPECIFICATION forming part of Letters Patent No. 493,609, dated March 14, 1893.

Application i'lled August 3 i 1 892.

.T0 all whom t may concern:

Be it known that we, HENRY PRICE BALL and AMANDUs METZGER, both citizens of the United States, residing at Schenectady, in the county of Schenectady and State of New York, have invented a certain new and useful Improvement in Lamp-Sockets, of which the following is a speciiication.

The present invention relates to lamp sockets of the variety known as marine sockets, one distinguishing peculiarity of such sockets being that they employ screw-threaded sleeve terminals for receiving the necks of lamps, consisting of a spiral wire.

The main objects of the present invention are to provide sockets of vthis character with switches, and to improve the mode of securing such sleeve terminals to the bodies of the sockets, and to improve certain other parts of the socket.

The invention consists in certain features and combinations hereinafter described and set forth in the claims.

In the accompanying drawings, Figures 1 and 3 are central sectional and side views, respectively, of the improved socket. Fig. 2 is a perspective view of the socket body and parts secured thereto, the socket shell being removed; and Fig. 4 is a sectional view of the body and parts secured thereto at right-angles to Fig. 1.

1 is an insulating socket body, preferably of molded porcelain, which supports the several parts of the socket. Said body has an integral extension 2, on which is secured an L-shaped metal piece 3 carrying a screw 4, and a similar extension 5 on which is a stamped metal piece G, which has a vertical arm 7 carrying a screw 8, diametrically opposite screw 4, and the end 9 bent to form a cylindrical socket for the switch spindle 10, said end 9 being formed with a cam edge 11 adapted to press on the screw 12, which projects from the spindle, as the spindle is turned to move the same inward, thus pressing the contact spring 13 down into position to co-operate with the central terminal of an Edison lamp when such lamp is placed in the socket.

14 is a rib on the body, forming means for bracing the device holding the key spindle. Said device, as well as the piece 3, is secured Serial No. 441,998. (No model.)

in place by a screw 15 extending through the insulating body from the bottom. Over the end of the spring 13 is placed an angle piece of stamped metal 16 secured by a screw passing through the body from the bottom and having a binding-screw 17 in an end thereof, to which one wire of the circuit leading to the socket may be connected. On the body also is a second terminal 18, to which the second wire of such circuit may be connected, the latter terminal being connected bya screw passing through it and through the ring holding the spiral wire sleeve of the socket, as shown in Fig. 4. Said spiral wire sleeve, designated by the numeral 19, is considerably shorter than similar sleeves heretofore employed, and tits into a cup or flanged ring 20, being secured therein by solder, as indicated at 21, and said ring being secured to the socket body as shown. Heretofore it has not been practicable to employ socket switches in sockets using the wire sleeves, in View of the manner in which such sleeves were supported,but by this improvement such switch can be readily used.

22 is a sleeve or shell adapted to cover the socket body. This shell has a slot 23 adapted to fit over the switch spindle, and two slots 24 adapted to lit over the screws 4, 8 carried by the metal pieces on the extensions of the body.

25 is a cap with a screw-threaded neck and having two diametrically arranged bayonet.

slots 26 which are adapted to engage Said screws 4, 8, and by means of which the cap can be secured in place.

By forming the socket in the manner described, the metal parts required are reduced in size and number and simplified in construction. By mounting the devices supporting screws 4, 8 on the insulating extensions, they can be made shorter and lighter than would be necessary if they were supported on the main part of the body. The spiral wire sleeve, being soldered into the supporting ring, has excellent electrical contact therewith and is rigidly held in place by means of the screws passing through the body and occupies no more space than an ordinary sheet metal screw-threaded sleeve.

1. The combination of a socket body, a spilOO ral wire sleeve secured to a metal cup or ring having an outwardly extending flange to which the sleeve is secured, and means for securing said cup or ring to said -socket body, substantially as described.

2. The combination of a socket body, a spiral wire sleeve secured to a metal cup or ring, having an outwardly extending liange to which the sleeve is secured means for securing said cup or ring to said socket body, and a central socket contact device, substantially as described.

3. The combination of an insulating socket body having extensions, metal pieces thereon carrying screws, and a sleeve or shell adapted to be placed over said body and to engage said screws, substantially as described.

HENRY PRICE BALL. AMANDUS METZGER.

Witnesses:

W. E. GILMORE, S. VOGEL. 

